Precautions

Drug information provided by: Merative, Micromedex®

If you will be taking this medicine for a long time, it is very important that your doctor check you or your child at regular visits. This will allow your doctor to see if the medicine is working properly and to check for any unwanted effects.

You may be taking other medicines for asthma together with montelukast. Do not stop taking these medicines and do not reduce the dose, even if your asthma seems better, unless you or your child are told to do so by your doctor.

Talk to your doctor or get medical care right away if:

  • Your or your child's symptoms do not improve after using this medicine or if they become worse.
  • Your short-acting inhaler does not seem to be working as well as usual and you need to use it more often.

Montelukast may cause some people to be agitated, disoriented, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed. Report any unusual thoughts or behaviors that trouble you or your child, especially if they are new or get worse quickly. Make sure the doctor knows if you or your child have trouble sleeping, get upset easily, or start to act reckless. Also tell the doctor if you or your child have sudden or strong feelings, such as feeling nervous, angry, restless, violent, or scared.

This medicine may increase certain white blood cells (eosinophils) and may cause Churg-Strauss syndrome (blood vessel disease). This usually occurs in patients who have asthma or are taking oral steroid medicines that is being stopped or the dose is being reduced or lowered. Check with your doctor right away if you have a feeling of pins and needles, numbness in your arms or legs, flu-like symptoms, rash, or pain or swelling of the sinuses.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Reciba nuestro boletín informativo gratuito en español

El boletín informativo de Mayo Clinic en español es gratuito y se envía semanalmente por correo electrónico con consejos de salud, recetas deliciosas, descubrimientos médicos y más. Vea un ejemplo del correo electrónico e inscríbase a continuación.

Con el fin de proporcionarle la información más relevante y útil, y de entender qué información es beneficiosa, posiblemente combinemos tanto su correo electrónico como la información sobre el uso del sitio web con otro tipo de datos que tenemos acerca de usted. Si usted es un paciente de Mayo Clinic, esto puede incluir información confidencial de salud. Si se combinan esos datos con su información médica confidencial, toda esta información se tratará como información médica confidencial y solo se usará o revelará según lo descrito en nuestro aviso sobre políticas de privacidad. En cualquier momento, puede optar por no recibir las comunicaciones de correo electrónico si presiona en el mensaje el enlace para anular la suscripción.

Portions of this document last updated: March 01, 2024

Copyright: © Merative US L.P. 1973, 2024. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.